I have a Lowrance HDS 12 gimble mount on this, and the whole pattern lines up perfect. My only dislike on this, is if you use nylon lock nuts, the inner holes hit the mount arm when trying to rotate the mount. Putting bolts up through the plate fixes this, but it's nor ideal. Once I have this mounted in my boat it may not be an issue. But other than that, it's a quality mount.
Rating: [4 of 5 Stars!]